ContinueWith(TResult) Method (Func(Task, Object, TResult), Object, TaskContinuationOptions)
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Task.ContinueWith<TResult> Method (Func<Task, Object, TResult>, Object, TaskContinuationOptions)

.NET Framework 4.6 and 4.5

Creates a continuation that executes based on the specified task continuation options when the target Task completes. The continuation receives caller-supplied state information.

Namespace:   System.Threading.Tasks
Assembly:  mscorlib (in mscorlib.dll)

public Task<TResult> ContinueWith<TResult>(
	Func<Task, object, TResult> continuationFunction,
	object state,
	TaskContinuationOptions continuationOptions


Type: System.Func<Task, Object, TResult>

A function to run when the Task completes. When run, the delegate will be passed the completed task and the caller-supplied state object as arguments.

Type: System.Object

An object representing data to be used by the continuation function.

Type: System.Threading.Tasks.TaskContinuationOptions

Options for when the continuation is scheduled and how it behaves. This includes criteria, such as OnlyOnCanceled, as well as execution options, such as ExecuteSynchronously.

Return Value

Type: System.Threading.Tasks.Task<TResult>

A new continuation Task<TResult>.

Type Parameters


The type of the result produced by the continuation.

Exception Condition

The continuationFunction argument is null.


The continuationOptions argument specifies an invalid value for TaskContinuationOptions.

The returned Task<TResult> will not be scheduled for execution until the current task has completed. If the continuation criteria specified through the continuationOptions parameter are not met, the continuation task will be canceled instead of scheduled.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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